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Microstrip patch antennas have been widely used in a various useful applications, due to their low weight and low profile, conformability, easy and cheap realization. A low profile patch antenna for WLAN application is proposed in this paper. This proposed antenna is made by using the probe feeding and aperture coupled feeding methods. This antenna is designed in order to improve the impedance bandwidth and obtain the circular polarization without using truncated corners in patch. The impedance bandwidth will be increased by making slots onto the patch. This unequal parallel slots patch antenna is the modified structure of E patch antenna and U slot Patch antenna. This patch antenna provides a bandwidth of around 16.4% with 1.5 VSWR. The simulation process has been done through high frequency structure simulator (HFSS). The properties of antenna such as bandwidth, S parameter, VSWR have been investigated. This paper also aims at comparing between different feeding methods.